I'd like to see that kids dyno sheet. a 99-04 GT is NOT making 260RWHP with just LT's, a CAI and a Tune. I don't mean to rain on your parade... Just thought the 260rwhp was a bit much.

 

You need to look at suspension or you're gonna get DR's and still have traction issues.
You want traction look at this:
Upper and lower control arms
Shocks
SOFT (not hard like eibach) springs
Subframe connectors
Replace bushings
Panhard bar
And if you're really serious take out your front sway bar. . . . . .

DR's is not the instant answer for traction issues.

 

With your power level MTs are going to be too much, will probably end up bogging the car out more than launching hard.

Get some nittos, when I had basically your mods they hooked really well, and you can run them as street tires. With my suspension work my 315 nittos still hook pretty well considering I am making 400+ WHP.

 

the guy that owns alternative auto does wonders with stangs

the guy i bought my car off of had my car dynoed at walsh motorsports also

my car put down 319rwhp with:
k&n filter
ported intake manifold
diablo chip
custom tune
o/r x
flowmaster 40's

and people dont believe it

AND i have a dyno sheet to prove it

 

Either that, or his dyno reads high. Don't discount this a bit, it happens ALL the time, espcially with dynojets.

On a bolton only car, a drag radial is more than enough to get the job done without suspension work. On the street, a nitto is more than enough, as your not going to be doing any wheelstands on a bolton only car anyway.

At the track its another matter, but a tire like a MT is NOT going to spin, even with no suspension work, on a 260 WHP bolton only car. You just don't have the power to turn them over.

Hell, with just stock style aftemarket suspension and 420 WHP I cannot turn over the MTs with a 4500 RPM launch at the strip ifI heat em up good... and this is at a track that doens't exactly prep really well.

Lets put it this way, I never touched the suspension till AFTER the blower went on. Even with just 275 nitto d/rs on the back, I could pop the clutch pretty hard and jet off on the street, with no tire spin, if the nittos were warmed up. That was even making 280 WHP with cams etc.

I wouldn't bet on it... true the 4.10s help out in each gear, but with stock 3.27s he is going to be staying in his lower, and thus more agressive, gears longer. Without a good launch I can see a more agressive ratio acutally hurting you in a race, or even in a race from a roll.

it takes ALOT to come back from getting pulled on, that is to say if someone already outlaunches you and is pulling away it takes alot more to catch back up and then pass em then it would if you were already side by side/outlaunched him. A set of gears isn't going to make THAT much of a difference, espcially not a 4.10.

 

i am talking about the E/T streets radial not the drag.

 

Yeah but you're gonna have much better launches with suspension work and your tires are going to last A LOT longer. Of coarse you can go and throw DR's on a stock suspension with mild bolt ons but i would put my money on the car that has suspension work done and then goes and gets DR's than the car with just dr's. I say do suspension first then dr's. Even if your car is stock. A set of upper and lower control arms are cheap off ebay. Atleast just do that. You dont need all that crap like springs and all that. Maybe get some shocks too but thats all you really need. Then get dr's.